Protected metal article



PatentedJune 6,1922. l

J. H. YOUNG. PROTECTED METAL ARTICLE. APPLrcAnoN man MAR. 26. |921.

mman STATES eA'rENr orifice.

mmrsnowaan reune, or PITTSBURGH, rannsrnvama, Assieme rc n.- H.ROBERTSON COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

PROTECTED METAL ARTICLE.

Specification of Letters Patent. Patented June 6, 1922.

Application mea 'Maren as, 1921. serial No. 455,967.

To all whom z'tmay comem:

Be it known that I, JAMES HOWARD YOUNG, a citizen of the United States,re-.

j article of that character in which an article of corrodible metal,such as iron or steel, is protected against corrosion by a layer ofasphalt or like bituminous material alone or in conjunction with layersof fibrous material, such as asbestos,wool, or other fibrous felts. l

Protective metal articles of the character described are efficientagainst corrosion as long as the bituminous layer remains intact,

but where the bituminous layer is exposed,

it is subject'to the deleterious action of light, heat, and atmosphericconditions; also to abrasion and other-"mechanical actions in handling,crating and' shipping, and in some cases to injury by .adhesion of oneprotected article to another.

Thepresent invention has for its object to provide ,a protected 'metalarticle of the character described, which posessesv all of thevadvantageous features of the protected articles above referred to, andin addition possesses highly desirable features not possessed by them,among which may be mentioned, high light and heat refiecting properties,Whlch enable the' protected article to be edectively used in warmclimates, as Well as in cold climates, andv which can be given anysurface color desired with any drying oil` paints. Also the detrimentaleffects ofA abrasion and other mechanical. actionsas` well as adhesionare avoided.

` substantially non-corrodible metallic layer which is adhesivelyaffixed to the cor-rodible metal 4article by the interposed layerofhydrocarbonaceousmaterial.

l yThe layer of relatively non-corrodible metal may consist of finelydivided metals,

, tected metal article which have high light and heat refiectingproerties, as will be described.

' hese and other features of this invention will be pointed out in theclaims at the end of'this specification. v

Fig. 1 is a plan view of one form of proembodying this invention, and

Fig. 2, a section on an enlarged scale on the line 2--2, Fig. l.

Referringto the drawing, a represents an article of corrodible metal,such as iron or steel, which may be rigid or flexible and ofany form,and which is herein represented as a metal sheet.

The metal article a is provided with a protective layer b of asphalt orhydrocarbonaceous material of like character, which may be applied inany suitable manner as bypassing the article t through a bath of meltedasphalt, and to the layer b is applied layers c of asbestos, wool orother fibrous felt, which is provided with a layer d of asphalt or likehydrocarbonaceous material. The protected metal article thus describedis provided with an outer surface of asphalt or like hydrocarbonaceousmaterial, which is black or dark colored and open to the objectionsinherent in asphalt and like hydrocarbonaceous materials. 4

In accordance with the present invention, the protected article isprovided with a relatively thin fiexible layer e of substantially orrelatively non-corrodible` light colored metal, preferably aluminum, butwhich may be copper, zinc or other well-known pigments used in theso-called bronzing li uids. These pigments may be applied to theituminous surfaces while the latter are hot and tacky and in conditionto permit the pigments being firmly embedded in the same, or as may bepreferred, the pigments may be applied in the form of a paint, in whichcase, the paint is provided with a vehicle fory the pigment which exertsno appreciable solvent action on the bituminous surface and which when`dry forms a firm, elastic, weather-resistingfilm, which Ais not tacky,

and which isl a-good light and heat reflector. A

tively non-corrodible metal, preferably aluminum, and using a solventfor the cellulose 1 inactive on asphalt or like h which is volatile andpractically l drocarbonaceous material. A suitable so vent may becompounds,

vobtained, by mixing about 20% acetone with about 20% glacial aceticacid andv about 55% ethyl-l alcohol. If desired a suitable softeningagent such as castor oilwmay be added to the paint.

The aluminum or other light colored non. corrodible metal in a finelydivided con dition is bound together by the cellulose nitrate or acetatebinder and is present in suliicient quantity in the paint, to thoroughlycoverv the bituminous layer to which it is applied and thoroughly andeffectively protect the same against the extraneous influences oftheatmosphere, gases and fumes, and effectively seals the volatileconstituents of the bituminous layer, thereby prolonging the protectivevaluel of said layer, and in ad dition reflects light and heat soefficiently as to enable the protected metal article ,to be used in Warmclimates .as Well as in the cooler or cold climates.

Furthermore the bright metallic exterior layer affords protection forthe bituminous layer against abrasion, and avoids sticking miam minousor likehydrocarbonaceous material covering said corrodible metal, and alayer of finely divided relatively non-corrodible `metal adhesivelyaiiixed to said .hydrocar- 45 bonaceous material.

2. As an improved article of manufacture, a protected metal articlecomprising an ar-v ticle of corrodible metal, a layer of bituminous orlike hydrocarbonaceous material "covering saidcorrodible metal, and alayer of relatively non-corrodible metal adhesively .affixed to saidhydrocarbonaceous layer and composed of nely divided light coloredrelatively non-corrodible metal united by a binder 0f cellulosederivative.

3. As an improved arti-cle of` manufacture, a protected metal articlecomprising an article of corrodible metal, a layer of bituminous or likehydrocarbonaceous material 50 covering said corrodible metal, and a'relatively thin layer of relatively non-corrodible metal adhesivelyaffixed to the corrodible metall article by said hydrocarbonaceous 4. Asan improved article of manufacture, a protected metal article comprisingan article of corrodible metal, a layer of 'bituminous or likehydrocarbonaceous material coveringsaidl corrodible metal, and a layermetallic '1n appearancegand consisting vof a cellulose derivative andcomminuted` material metallic in appearance.

5. An article having applied Athereto a layer of bituminousv or likehydro'carboria-v 75 ceous materialand an insolublesweather-resistinglayer composed of a comminuted bright metal and a binder of cellulose.

In testimony whereof, I have signed my name to this. specification;

JAMES HOWARD YOUNG.

